In addition to the adventure see which I should have suggested Peter write (and which he eventually did), it crossed my mind that there's one I should have come up with: As-Sharak, Do Do Do-do Doo: Delvers encounter small demonic creatures with elemental powers, like vicious feral kittens. While as-Sharak are thought to be produced by curses on mortal wizards, they discover that some have figured out how to reproduce. The adventurers must fight off the hunting hordes of juvenile as-Sharak, defeat their parents, and seek out the lair of the formidable grandparent as-Sharak.